Untested hacks to swarm to avoid warnings.

samples-dev/swarm/swarm_ui_lib/touch/FxUtil.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of touch;
 
 /**
  * Common effects related helpers.
  */
 class FxUtil {
@@ skipping 50 matching lines @@
 
   /**
    * Determine the position of an [element] relative to a [target] element.
    * Moving the [element] to be a child of [target] and setting the
    * [element]'s top and left values to the returned coordinate should result
    * in the [element]'s position remaining unchanged while its parent is
    * changed.
    */
   static Coordinate computeRelativePosition(Element element, Element target) {
     final testPoint = new Point(0, 0);
+    /*
     final pagePoint =
         window.convertPointFromNodeToPage(element, testPoint);
     final pointRelativeToTarget =
         window.convertPointFromPageToNode(target, pagePoint);
     return new Coordinate(pointRelativeToTarget.x, pointRelativeToTarget.y);
+    */
+    // TODO(sra): Test this version that avoids the nonstandard
+    // `convertPointFromPageToNode`.
+    var eRect = element.getBoundingClientRect();
+    var tRect = target.getBoundingClientRect();
+    return new Coordinate(eRect.left - tRect.left, eRect.top - tRect.top);
   }
 
   /** Clear a -webkit-transform from an element. */
   static void clearWebkitTransform(Element el) {
     el.style.transform = '';
   }
 
   /**
    * Checks whether an element has a translate3d webkit transform applied.
    */
@@ skipping 10 matching lines @@
     style.left = '${x}px';
     style.top = '${y}px';
   }
 }
 
 class TransitionTimingFunction {
   static const EASE_IN = 'ease-in';
   static const EASE_OUT = 'ease-out';
   static const EASE_IN_OUT = 'ease-in-out';
 }